We ventured into the just-opened Westfield San Francisco Centre branch of Japanese fast-food chain Ajisen Ramen yesterday. It's been more than a decade since a branch of Japan's Yoshinoya came to the city and failed, so we were curious about San Francisco's latest chain import.
Ajisen specializes in Kumamoto-style ramen, signature of a region on the Japanese island of Kyushu. It shares the same characteristics as other ramen variations from the island, namely the use of tonkotsu broth and straight noodles. The difference here is the milder-tasting tonkotsu broth blend, usually achieved by adding vegetable and chicken stocks to the secret base recipe.
As you might expect, service was scattered on Ajisen's first day.